Today host 'obsessed' with this gut-loving tonic

When nutrition guru Lyndi Cohen, aka The Nude Nutritionist, dropped into the Today show to share some immune-boosting tips in time for flu season (did you know our gut accounts for 70 percent of our immune system?), there was one particular food that resonated with the show's health-conscious host, Lisa Wilkinson.

The gut-boosting remedy in question? Kombucha.

"I'm obsessed with this stuff – I drink of a bottle of this a day," the host enthuses. "It's a cultured live drink – and it's delicious."

It soon becomes clear, though, that the two hosts have very different perspectives on the subject of fermented probiotics and the part they play in gut health, with Karl Stefanovic quick to brush it off as a faddish health trend.

"What a load of rubbish, surely. I mean, how many of these are just placebo? Just modern-day food… fallacies," Karl quips, before putting the question to his co-host: why do you believe in it?

The query prompted a passionate response from the TV personality. Watch the clip above to hear Lisa's heartfelt answer, including how addressing gut health has changed her life for the better.